This is a wet-themed work in which a female student who has just entered university participates in a trial membership of a rare club called the "Clothed Swimming Club." First, she stands by the poolside in a black suit and does warm-up exercises before entering the water. Then, she splashes pool water toward herself and finally gets into the pool. She gets her body accustomed to the sensation of being in the water while clothed. Once she gets used to it, she starts swimming, but since she can't swim at all, she's a complete non-swimmer. She reluctantly practices kicking forward using a kickboard, walks in the water, and does breath-hold dives, focusing on getting more used to the pool water and removing her fear of water.